Question

(x+2)^2-6(x+2)+9 ,..........​

Answer 1

Step-by-step explanation:

(x+2)^2-6(x+2)+9

x^2+4x+4-6x-12+9

x^2-2x+1

x^2-x-x+1

(x-1)(x-1)

Answer 2

Answer:

(x - 1)^2

Step-by-step explanation:

Let x + 2 be y

so

y ^2 - 6y + 9

so

(y - 3)^2

Now put y = x +2

( x +2 -3)^2

( x -1)^2

It is a simple factorisation methods we generally assume a large number to reduce the equation and for time saving too.

so we assume x + 2 =y